BS EN 4585-2003 Aerospace series - Clips spring tension - Technical specification《航空航天系列 弹簧夹 技术规范》.pdf

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1、BRITISH STANDARD AEROSPACE SERIES BS EN 4585:2003 Clips, spring tension Technical specification The European Standard EN 4585:2003 has the status of a British Standard ICS 49.030.50 BS EN 4585:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee

2、 on 10 March 2003 BSI 10 March 2003 ISBN 0 580 41404 3 National foreword This British Standard is the official English language version of EN 4585:2003. The UK participation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and fastening systems, to Subcommittee ACE

3、/12/1, Aerospace fasteners and fastening systems (international) which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referr

4、ed to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisi

5、ons of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, o

6、r proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date

7、displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN4585 February2003 ICS49.030.50 Englishversion AerospaceseriesClips,springtensionTechnicalspecification ThisEuropeanStanda

8、rdwasapprovedbyCENon1November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplic

9、ationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersare

10、thenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,SlovakRepublic,Spain,Sweden,Switzerland and UnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROP

11、ISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN4585:2003EEN4585:2003(E) 2 Contents Foreword3 1 Scope 3 2 Normativereferences 3 3 Termsanddefinitions. .4 4 Qualityassurance .

12、.6 4.1 Qualification .6 4.2 Acceptance.6 5 Requirements .7 AnnexA (normative) Installationandremovalofthemandrel12 AnnexB (informative) Retentionresistancetestbench.13EN4585:2003(E) 3 Foreword ThisdocumentEN4585:2003hasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). Afterenquir

13、iesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhasreceived theapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesofAECMA,priortoits presentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltext

14、or byendorsement,atthelatestbyAugust2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby August2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finlan

15、d, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, SlovakRepublic,Spain,Sweden,SwitzerlandandUnitedKingdom. 1Scope Thisstandardspecifiesthecharacteristics,qualificationandacceptancerequirementsforspringtensionclipsfor thesupportofelectricalharnesses,

16、inalloysteelforaerospaceapplications. Itisapplicablewheneverreferenced. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedrefer

17、ences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). ISO28591 SamplingproceduresforinspectionbyattributesPart1:Samplingsche

18、mesindexedbyacceptance qualitylimit(AQL)forlotbyIotinspection. ISO3452 NondestructivetestingPenetrantinspectionGeneralprinciples. ISO3534 StatisticsVocabularyandsymbols. ISO4288 GeometricalproductSpecifications(GPS)Surfacetexture:ProfilemethodRulesandprocedures fortheassessmentofsurfacetexture. EN91

19、33 AerospaceseriesQualitymanagementsystemsQualificationprocedureforaerospacestandard parts. TR4586 AerospaceseriesClips,springtensionDesignrecommendations 1) . 1) PublishedasAECMATechnicalRepor1atthedateofpublicationofthisstandardEN4585:2003(E) 4 TR4587 AerospaceseriesClips,springtensionAssemblyreco

20、mmendations 1) . 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply. 3.1 batch quantityoffinishedspringclips,ofthesametypeandsamediameter,producedfromamaterialobtainedfromthe samemelt,manufacturedinthecourseofthesameproductioncycle,followingthesamemanufac

21、turingrouteand havingundergonealltherelevantheattreatmentsandsurfacetreatments 3.2Surface discontinuities 3.2.1 crack ruptureinthematerialwhichmayextendinanydirectionandwhichmaybeintercrystallineortranscrystallinein character 3.2.2 seam opensurfacedefect 3.2.3 lap surfacedefectcausedbyfoldingovermet

22、alfinsorsharpcornersandthencompressingthemintothesurface 3.2.4 inclusions nonmetallicparticlesoriginatingfromthematerialmanufacturingprocess.Theseparticlesmaybeisolatedor arrangedinstrings. 3.3 testtemperature ambienttemperature,unlessotherwisespecified 3.4 simplerandomsampling takingof nitemsfromap

23、opulationof Nitemsinsuchawaythatallpossiblecombinationsof nitemshavethe sameprobabilityofbeingchosenEN4585:2003(E) 5 3.5 criticaldefect defectthat,accordingtojudgementandexperience,islikelytoresultinhazardousorunsafeconditionsfor individualsusing,maintaining,ordependingupontheconsideredproduct,ortha

24、tislikelytopreventperformanceof thefunctionofamajorenditem 3.6 majordefect defectotherthancritical,thatislikelytoresultinafailureortoreducemateriallytheusabilityoftheconsidered productforitsintendedpurpose 3.7 minordefect defectthatisnotlikelytoreducemateriallytheusabilityoftheconsideredproductforit

25、sintendedpurpose,orthat isadeparturefromestablishedspecificationhavinglittlebearingontheeffectiveuseoroperationofthisproduct 3.8 samplingplan planaccordingtowhichoneormoresamplesaretakeninordertoobtaininformationandpossiblytoreacha decision 3.9 limitingquality inasamplingplan,thequalitylimitwhichcor

26、respondstothespecified10%probabilityofacceptance 3.10 acceptancequalitylimit(AQL) qualitylimitwhichinasamplingplancorrespondstoaspecifiedbutrelativelyhighprobabilityofacceptance Itisthemaximumpercentdefective(orthemaximumnumberofdefectsperhundredunits)that,forpurposesof samplinginspectioncanbeconsid

27、eredsatisfactoryasaprocessaverage 3.11 retentionresistance minimumradialforcesthatthespringclipshallopposetotheremovaloftheretainedpart 3.12 griprange allharnessnominaldiameterswhichcanberetainedbyaspringclipsizeEN4585:2003(E) 6 4Quality assurance 4.1Qualification EN9133 Qualificationinspectionsandt

28、ests(requirements,methods,samplesize)arespecifiedinTable1.Theyshallbe carriedouton: eachtypeandsizeofspringclip; 5springclipsselectedfromasinglebatchbysimplerandomsampling. Thetestprogrammemaypossiblybereduced,orthequalificationbegrantedwithoutinspectionortesting:any suchdecisionshallbebasedontheres

29、ultsobtainedonsimilartypesanddiametersofspringclipsprovidedthat thedesignandmanufacturingconditionsareidentical.Itshallbeclearlyidentifiedonthetestreport. Table2indicatestheallocationofspringclipsamplesfortheinspectionsandtests. 4.2Acceptance 4.2.1Purpose Thepurposeofacceptanceinspectionsandtestsist

30、ocheck,assimplyaspossible,byamethodrepresentativeof actualuseconditions,withtheuncertaintyinherenttostatisticalsampling,thatthespringclipsconstitutingthe batchsatisfytherequirementsofthisstandard. 4.2.2Conditions Acceptanceinspectionsandtests(requirements,methods,numbersofspringclips)arespecifiedinT

31、able1.They shallbecarriedoutoneachbatch.Springclipsfromthebatchtobetestedshallbeselectedbysimplerandom sampling. Eachspringclipmaybesubmittedtoseveralinspectionsortests. Ifamorestringentinspectionisdeemednecessary,allorpartofthequalificationinspectionsandtestsmaybe performedduringtheacceptanceinspec

32、tionandtesting.Inthiscase,thenumberofspringclipssubmittedtothese inspectionsandtestsisthesameasthatsubmittedforqualificationinspectionandtests. 4.2.3Responsibility Acceptanceinspectionsandtestsshallbecarriedoutbythemanufacturer,orunderhisresponsibility. 4.2.4 Inspectionandtestreport Atestreportshowi

33、ngactualnumericalvaluesshallbeprovidedifspecifiedinthepurchaseorder.EN4585:2003(E) 7 5Requirements SeeTable1. Table1Technicalrequirementsandtestmethods Clause Characteristic Requirement Inspectionandtestmethod Q/A a Samplesize Q 5.1 Material Inaccordancewiththeproduct standardordefinitiondocument Ch

34、emicalanalysisor certificateofcomplianceissued bythemanufacturerofthesemi finishedproduct A Q5 5.2 Dimensions, tolerancesof formand position Inaccordancewiththeproduct standardordefinitiondocument Standardgauging Cautionshallbetakenbecause somemeasurementsshouldbe madeunderstresscondition . A Tables

35、3and4 5.3 Manufacturing Q1 5.3.1 Surface roughness Inaccordancewiththeproduct standardordefinitiondocument ISO4288 Visualexamination A Tables3and4 Q5 A Tables3and4 5.3.2 Surface discontinuities Springclipsshallbefreefrom surfacedefectsindicatedin 3.2liabletohaveanadverse affectontheircharacteristics

36、 andendurance. Cracksarenotpermitted. ISO3452 Intheeventofanydoubtarising astothenatureofthedefects detected,inspectspringclips underlowmagnificationafter sectioning Q5 5.3.3 Surface coating Inaccordancewiththe productstandardordefinition document Seeapplicablecoatingstandard A Tables3and4 5.4 Mecha

37、nical properties 5.4.1 Mandrel assemblyfor mechanical properties tests Springclipsshallbeinstalledby themethodgiveninTR4587on theupperhorizontalsurfaceofa testblockdesignedin accordancewithTR4586. Unlessotherwisespecified,the installedspringclipsshallbe testedindividuallywitha stainlesssteelmandrelh

38、avinga surfaceroughness Ra=1,6per ISO4288withadiameterequal tothemaximumvalueofthegrip rangegivenintheproduct standardordefinitiondocument. Themandrelshallbeinstalled radiallyintothespringclip(see annexA,normative). NOTEAtubemayalsobeused insteadofamandrelforthetest. continuedEN4585:2003(E) 8 Table1

39、 (continued) Clause Characteristic Requirement Inspectionandtestmethod Q/A a Samplesize 5.4.2 Corrosion resistance Metallicspringclipsshall withstandthiscorrosionwithout anyofthefollowingdefects afterthecompletionofthe mechanicalpropertytests: indicationsofcracksorpitting whenvisuallyexaminedat10 ti

40、mesmagnification; indicationofintergranularor transgranularcorrosiveattack duringmetallurgical examinationoftransversal sectionsofthespringclip. Themandrelshallbefittedinto thespringclipsforthistest accordingto5.4.1. Thetestblockshallthenbe immersedina(3,5 0,1)% sodiumchloride(NaCl)aqueous solutionf

41、or8to10minat ambienttemperature. Theassemblyshallthenbe removedfromtheaqueous solutionanddriedinairat ambienttemperatureforthe remainderof1h. Thissubsequentimmersionand dryingprocessshallberepeated toatotalof50cycles. NOTETheNaClsolutionshould containadrybasisofnomore than0,1%ofsodiumiodideand 0,5%o

42、ftotalimpurities. Q5 5.4.3 Retention resistance Springclipsshallmeetthe retentionresistancegivenin Figure1. Themandrelshallbeinstalled intothespringclipsforthistest accordingto5.4.1. Theretentionresistanceshall beverifiedusingasuitable calibratedtensiletestmachine withtheappropriateloadcell fitted.T

43、heloadcellshallbe firmlyattachedtothemandrel inordertogettheretention forceverticallyintheplaneof symmetryofthespringclip. Exampleofsuchtestbenchis giveninannexB,informative. Q5 5.4.4 Reusability Springclipsshallmeetthe retentionresistancegivenin Figure1. Cracksarenotpermittedonthe springclipsafterthistest. Themandrelshallbeinstalled intothespringclipsforthistest accordingto5.4.1. Thetestblockshallthenbeput inanovenandbemaintained atthemaximumoperating temperaturegivenbyproduct standardordefinitiondocument withatoleranceof 10Cfor atleast1h. Theassemblyshallthenbe remov